Assessing the transport of pharmaceutical compounds in a layered aquifer discharging to a stream
| Autor: | Ingelise Møller, Anne Thobo Sonne, Jørn Kristian Pedersen, Vinni Kampman Rønde, Poul Løgstrup Bjerg, Philip John Binning, Ursula S. McKnight, Majken Frederiksen, Nicola Balbarini |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Groundwater flow
0208 environmental biotechnology Pharmaceutical plume Aquifer Soil science 02 engineering and technology Groundwater-surface water interaction Chlorinated ethenes Rivers Hyporheic zone Principal component analyses and hierarchical cluster analysis Computers in Earth Sciences Groundwater Water Science and Technology geography geography.geographical_feature_category Hydrogeology Integrated approach Contamination 020801 environmental engineering Plume Pharmaceutical Preparations Environmental science Groundwater modelling Water Pollutants Chemical |
| Zdroj: | Balbarini, N, Frederiksen, M, Rønde, V K, Møller, I, Sonne, A T, McKnight, U S, Pedersen, J K, Binning, P J & Bjerg, P L 2020, ' Assessing the transport of pharmaceutical compounds in a layered aquifer discharging to a stream ', Ground Water, vol. 58, no. 2, pp. 208-223 . https://doi.org/10.1111/gwat.12904 |
| Popis: | A groundwater plume containing high concentrations of pharmaceutical compounds, mainly sulfonamides, barbiturates, and ethyl urethane, in addition to chlorinated ethenes and benzene was investigated. The contamination originating from a former pharmaceutical industry discharges into a multilayered aquifer system and a downgradient stream. In this study, geological and hydrogeological data were integrated into a numerical flow model to examine identified trends using statistical approaches, including principal component analysis and hierarchal cluster analysis. A joint interpretation of the groundwater flow paths and contaminant concentrations in the different compartments (i.e., groundwater and hyporheic zone) provided insight on the transport processes of the different contaminant plumes to the stream. The analysis of historical groundwater concentrations of pharmaceutical compounds at the site suggested these compounds are slowly degrading. The pharmaceutical compounds migrate in both a deep semiconfined aquifer, as well as in the shallow unconfined aquifer, and enter the stream along a 2-km stretch. This contrasted with the chlorinated ethenes, which mainly discharge to the stream as a focused plume from the unconfined aquifer. The integrated approach developed here, combining groundwater flow modeling and statistical analyses of the contaminant concentration data collected in groundwater and the hyporheic zone, lead to an improved understanding of the observed distribution of contaminants in the unconfined and semiconfined aquifers, and thus to their discharge to the stream. This approach is particularly relevant for large and long-lasting contaminant sources and plumes, such as abandoned landfills and industrial production sites, where field investigations may be very expensive. |
| Databáze: | OpenAIRE |
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